Lighting fixture



FIG. 1 is a perspective view of lighting fixture showing my new design;

FIG. 2 is a front elevational view thereof; and,

FIG. 3 is a bottom plan view thereof.

The broken-line showing of environmental structures in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design of a lighting fixture, as shown and described. 